Autonomic nervous system

Question 1

preganglionic

Answer 1

-all preganglionic receptors are nicotinic/Ach

Question 2

postganglionic: parasympathetic

Answer 2

• 1) nicotinic=somatic NS
  2) muscarinic =smooth msucle, cardiac, muscle, exocrine glands
• Ach for both types (cholinergic postganglionic fibers)

Question 3

postganglionic: sympathetic

Answer 3

• alpha and beta receptors
• NE
• adrenergic fibers

Question 4

parasympathetic preganglionic

Answer 4

• craniosacral

- synapse near site of smooth muscle, cardiac muscle, exocrine glands–long

Question 5

parasympathetic postganglionic

Answer 5

-are short, b/c come from ganglia close to organs being innervated

Question 6

sympathetic preganglionic

Answer 6

thoracolumbar

Question 7

sympathetic postganglionic

Answer 7

• long

- b-1/b2/a-1 are adrenergic receptors

Question 8

-a-2:

Answer 8

• presynaptic and inhibitory
• when bound to NE, inhibit Adenylate cyclase, and inhibit cAMP formation, dec Ca entry to neuron terminal, decreasing release of NE into synaptic cleft

Question 9

NE action termination

Answer 9

• reuptake into postganglionic nerve

- MAO is in cytoplasm to deactivate it

Question 10

Ach action termination

Answer 10

acetylcholinesterase hydrolizes it

Question 11

somatic NS

Answer 11

-cholinergic efferent fibers from central cell bodies exit spinal cord and synapse to nicotinic receptors on skeletal muscle

Question 12

adrenal

Answer 12

-Acetylcholine cause release of epinephine